Sunday, April 15, 2012

The Prerequisites of Pipe Marking

By Tony Ferraro


The main objective of pipe marking is to give people appropriate info on what hazardous supplies it carries. There are currently numerous versions created for the standards of pipe marking and some even get combined to supply typical techniques for labelling. The older version from the American National Standards Institute or ANSI and the newer version of American Society of Testing and Supplies or the ASME merged and come up using the ANSI/ASME A13.1 Regular for pipe marking which offers labelling techniques that are more generally used in all commercial, industrial, facilities from the institutions and in establishments used for public gatherings. This merged standard cannot be applied to pipelines which are buried as well as to the electrical conduit.

Since the objective of pipe labels is to provide must-know information on the chemical or materials hazards that the pipe consists of, it is extremely important to location labels that may be effortlessly read and legends which are not too lengthy and simple to comprehend. The legend ought to be brief but lengthy sufficient to include all of the basic knowledge on the danger that the pipe contents might cause. Also, arrows to show the direction from the flow of the content material of the pipe should be included within the labels.

You will find 3 categories formulated on the old version from the ANSI A13.1 (1981 and 1996) that separate materials transported in the piping system in the above ground. These are the materials with High-Hazard, Low-Hazard and Fire Suppression.

The very first category, the supplies with High-Hazard, is composed of many areas with hazard effects like caustic and corrosive supplies; toxic supplies which are also capable of formulating toxic gases; flammable and toxic supplies; and chemicals that when released may bring hazardous effects because of extreme temperatures or pressures.

The second category, the one with low-hazard, contains materials which have low chance of causing harm towards the workers with its low pressures and mild temperatures. Hence, this really is not naturally hazardous.

The category with materials which have fire suppression has materials which are in a position of guarding the pipe such as carbon dioxide, foam, water, and Halon.

Each category is associated with labels that have different color-coding. The high-hazard materials have the black characters on a background in the color of yellow. The low-hazard is composed of two divisions for various color schemes. For liquid mixtures or liquid supplies use characters in white on a background in green color and for gaseous mixtures or gases, white characters on a background with blue color is utilized. The last category, the class on fire suppression, is made using letters in white and on a background of red color.

There is also regular for the size from the letters on the labels for pipe marking. Its height should be ? inch as the minimum measurement for its height. However the size should increase because the diameter of the pipe increases. The final factor to think about within the requirements of pipe marking is its placement.




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